Every Monday I drop a real PM interview case question. You practice in the comments. I give feedback. We all get better together. No lurking allowed. 😄 🎯 This week's scenario: You're the PM for Instagram Stories. Over the last 90 days, DAU for Stories has dropped 15%, but overall Instagram DAU is flat. Your interviewer asks: "Walk me through how you'd diagnose this." Here's what I want to see in your answer: → What data would you pull first? → What hypotheses would you test? → What would you explicitly rule OUT early, and why? Drop your answer in the comments below. Doesn't have to be perfect, this is practice. I'll reply to every single answer this week with real feedback. If you know someone prepping for PM interviews, tag them here. They need this.